eye relief


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eye relief

The distance between the human eyeball and the eyelens of an eyepiece at which the observer can see clearly the full field of view. This is when the exit pupil corresponds with the pupil of the eye. Low-power eyepieces usually have good eye relief and high powers very little. An observer who must wear spectacles may find it difficult to use the higher powers.

eye relief

The distance from the eyeball to the eyepiece of night vision goggles.
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Unlike many of the more popular fixed 4X AR optics, the Accelerate has over 3 inches of eye relief.
PROS PRICE, LIFETIME WARRANTY, GENEROUS EYE RELIEF CONS STIFF ZOOM ADJUSTMENT
Two 10X models are offered, with field stops of 18 mm and 22 mm, and eye relief of 19.
The problem is that such short focal lengths tend to offer poor eye relief, the distance from the outer surface of the eyepiece's eye lens within which you can view the full viewing angle.
Similasan USA's SKUs range from Aging Eye Relief to Stye Eye Relief.
The Diamondback binoculars have rubber-armored housing with diamond checkering along the sides and multi-position twist-up eyecups for comfort and eye relief.
Long eye relief and turn-and-slide rubber eyecups make the Monarch 3 user-friendly, and a rubber-armored exterior rounds out this quality binocular.
The second most useful tool I've used with young children is an eyepiece with a wide apparent field of view (AFOV) and the best eye relief I can afford.
The turn-and-slide rubber eyecups provide more than 15mm of eye relief.
Other key features include an adjustable ocular focus, chemical rubber armor, 25mm ocular lens, auto shut-off, 10 brightness levels, 30mm objective lens and eye relief of 3.
Products such as Similasan Allergy Eye Relief contain 100% natural active ingredients--no dyes, chemical vasoconstrictors, decongestants or steroids," Torkos says.
HydroEye is a patented nutritional formulation that works from the inside out to provide continuous dry eye relief.